Centre for Metropolitan History - Promotes the study and wide appreciation of London's character and development from its beginnings to the present day.
History On-Line - Directory of links to on-line resources. Categorized by subject, time period, and geographical area.
Institute of Historical Research - Contains an open-access library, runs courses and major conferences, offers research fellowships and other awards and produces research aids and tools.
The Labyrinth - Resources for medieval studies searchable by keyword or subject. Includes maps, resources for children primary and secondary texts, and bibliographies.